help male or female?! pictures!

I bought 1 from a feed store and they said for sure it is sexed and a female, but my other one i bought from a farmer and i don't know what it is..he said it's possibly a female. AND i'd like to know what breed they are?? thanks

i hope they are both females :[ when will signs of a rooster show up?? the feed store said the black and white one was a female for sure. they said it's breed name is like ost..something. is there a chicken breed taht starts with the letter O?